{"id":"W2012407873","doi":"10.5539/jmr.v1n2p43","title":"The Model and Algorithm to Estimate the Difficulty Levels of Sudoku Puzzles","year":2009,"lang":"en","type":"article","venue":"Journal of Mathematics Research","topic":"graph theory and CDMA systems","field":"Engineering","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Natural Science Foundation of China","keywords":"Mathematics; Algorithm; Process (computing); Brute force; Computer science; Artificial intelligence; Calculus (dental); Programming language","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001364304,0.0008804586,0.0008508944,0.001430885,0.0006931878,0.001486935,0.002081795,0.00166853,0.005263383],"category_scores_gemma":[0.01214361,0.0006678391,0.0009774962,0.0006702029,0.0009461467,0.002052425,0.001682306,0.001923513,0.0009716362],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001616956,"about_ca_system_score_gemma":0.001988857,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.006111634,"about_ca_topic_score_gemma":0.005256153,"domain_scores_codex":[0.999208,0.0001958125,0.00004917994,0.0002228986,0.00020787,0.000116228],"domain_scores_gemma":[0.9957199,0.002468936,0.0004825573,0.0006232888,0.000538869,0.0001665462],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0002551957,0.0002319799,0.007327747,0.0001421935,0.00005917939,0.00008607694,0.0002247003,0.8011999,0.006581417,0.04832763,0.003273345,0.1322906],"study_design_scores_gemma":[0.00001908489,0.0000246864,0.0003101973,0.000007139027,0.000005733771,0.00003417768,0.0000197709,0.9844154,0.00140173,0.01328401,0.0004674574,0.00001068383],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.02555417,0.00003989174,0.9723031,0.0001185859,0.00001163292,0.0001048414,0.0001389098,0.0007555697,0.0009732603],"genre_scores_gemma":[0.2931011,0.00007204671,0.7033557,0.00006197224,0.00001689358,0.0005287973,0.0006242237,0.00014997,0.002089293],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.006111634,"threshold_uncertainty_score":0.01760781,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.07183652209651653,"score_gpt":0.3841909402591585,"score_spread":0.312354418162642,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}